The severity level, #1, isn't out of place for someone with the mildest form that can be diagnosed (from everything I've read, from Asperger's paper, Wing's paper, and a million more clinical definitions), see:
Quote:
Without supports in place, deficits in social communication cause noticeable impairments. Has difficulty initiating social interactions and demonstrates clear examples of atypical or unsuccessful responses to social overtures of others. May appear to have decreased interest in social interactions.
and
Quote:
Rituals and repetitive behaviors (RRB’s) cause significant interference with functioning in one or more contexts. Resists attempts by others to interrupt RRB’s or to be redirected from fixated interest.
That describes typical AS (the single interest that one focuses all their attention on for much of the time. The social stuff is basic there).